31225106 has 16 divisors (see below), whose sum is σ = 51206688. Its totient is φ = 14162400.

The previous prime is 31225097. The next prime is 31225123. The reversal of 31225106 is 60152213.

It is a super-2 number, since 2×31225106² = 1950014489422472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11126 + ... + 13646.

It is an arithmetic number, because the mean of its divisors is an integer number (3200418).

Almost surely, 2^31225106 is an apocalyptic number.

31225106 is a deficient number, since it is larger than the sum of its proper divisors (19981582).

31225106 is a wasteful number, since it uses less digits than its factorization.

31225106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3097.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 31225106 is about 5587.9429130942. The cubic root of 31225106 is about 314.8966016558.

Adding to 31225106 its reverse (60152213), we get a palindrome (91377319).

It can be divided in two parts, 3122 and 5106, that added together give a palindrome (8228).

The spelling of 31225106 in words is "thirty-one million, two hundred twenty-five thousand, one hundred six".